# US 2018/0323950 A1 · Method for transmitting information and device

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- Number: US 2018/0323950 A1
- Document ID: US20180323950A1
- Status: Published application
- Kind: A1
- Application number: 15/772,439
- Filed: 2016-01-06
- Published: 2018-11-08
- Earliest claimed: 2016-01-06
- Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Inventors: Bin FENG
- Web page: https://patentgrep.com/patent/US20180323950A1

## CPC

- H04L 5/1469: {using time-sharing}
- H04L 1/1657: {Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/143: {for modulated signals (H04L5/1469 takes precedence)}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/12: Wireless traffic scheduling
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Provided are a method for transmitting information and a device. The method comprises: a receiving end device receiving, within a first time unit, first information sent by a sending end device; and the receiving end device sending, within a second time unit, second information corresponding to the first information to the sending end device, wherein the duration of the first time unit is different from that of the second time unit. By means of the method for transmitting information in the embodiments of the present invention, when different transmission time intervals are used for an uplink and a downlink or a plurality of types of transmission time intervals are used for a communication system, rational scheduling and a time sequence fed back can be determined for devices at a receiving end and a sending end so as to ensure normal transmission of the information.

## Claims

### Claim 1

An information transmission method, comprising:
receiving, by a receiving end device, first information sent by a sending end device in a first time unit; and
sending, by the receiving end device, second information corresponding to the first information to the sending end device in a second time unit, wherein a duration of the first time unit is different from that of the second time unit.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the second time unit is a first one of second time units after a target time length since a starting moment of the first time unit, wherein the target time length is an integral multiple of the duration of the first time unit.

### Claim 3 (depends on 1)

The method according to claim 1, wherein a subframe comprises M first time units, an ending moment of an ith first time unit in the M first time units is before a starting moment of an (i+1)th first time unit, or, the ending moment of the ith first time unit is the starting moment of the (i+1)th first time unit, wherein M is a positive integer and M≥1, i is set to be 0 when M is 1, and i is a positive integer and 1≤i≤M−1 when M>1; and
a subframe comprises N second time units, an ending moment of a kth second time unit in the N second time units is before a starting moment of a (k+1)th second time unit, or, the ending moment of the kth second time unit in the N second time units is the starting moment of the (k+1)th second time unit, wherein N is a positive integer and N≥1, k is set to be 0 when N is 1, and k is a positive integer and 1≤k≤N−1 when N>1.

### Claim 4 (depends on 3)

The method according to claim 3, wherein, when the method is applied to a Frequency Division duplexing (FDD) system, a value of N is 1, and a value of M is 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
receiving, by the receiving end device, the first information in a first one of first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+2, a being a subframe index number;
or,
receiving, by the receiving end device, the first information in a second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+3, a being the subframe index number.

### Claim 5 (depends on 3)

The method according to claim 3, wherein, when the method is applied to the FDD system, a value of N is 1, and M is a positive integer more than or equal to 3,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
receiving, by the receiving end device, the first information in any one of first M−3 first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+1, a being a subframe index number;
or,
receiving, by the receiving end device, the first information in any one of last three first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+2, a being the subframe index number.

### Claim 6 (depends on 3)

The method according to claim 3, wherein, when the method is applied to the FDD system, a value of M is 1, and N is a positive integer more than or equal to 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise:
receiving, by the receiving end device, the first information in a subframe a; and
sending, by the receiving end device, the second information to the sending end device in a first one of second time units in a subframe a+4, a being the subframe index number.

### Claim 7 (depends on 3)

The method according to claim 3, wherein, when the method is applied to the FDD system, a value of M is 3, and N is a positive integer more than or equal to 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
receiving, by the receiving end device, the first information in a first one of first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in a second one of second time units in a subframe a+1, a being the subframe index number;
or,
receiving, by the receiving end device, the first information in a second one of first time units or third one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a first one of second time units in a subframe a+2, a being the subframe index number.

### Claim 8 (depends on 3)

The method according to claim 3, wherein, when the method is applied to the FDD system, a value of M is 4, and N is a positive integer more than or equal to 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
receiving, by the receiving end device, the first information in a first one of first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in a first one of second time units in a subframe a+1, a being the subframe index number;
receiving, by the receiving end device, the first information in a second one of first time units or third one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a second one of second time units in the subframe a+1, a being the subframe index number;
or,
receiving, by the receiving end device, the first information in a fourth one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the first one of second time units in a subframe a+2, a being the subframe index number.

### Claim 9 (depends on 3)

The method according to claim 3, wherein, when the method is applied to the FDD system, M is a positive integer more than or equal to 6, and N is a positive integer more than or equal to 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
receiving, by the receiving end device, the first information in any one of first M−3 first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in the first one of second time units in a subframe a+1, a being the subframe index number;
or,
receiving, by the receiving end device, the first information in any one of last three first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the second one of second time units in the subframe a+1, a being the subframe index number.

### Claim 10 (depends on 3)

The method according to claim 3, wherein, when the method is applied to a Time Division duplexing (TDD) system, a value of N is 1, and a value of M is 2,
wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit and sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprise at least one of the following:
the method being applied to a TDD uplink/downlink configuration 0, receiving, by the receiving end device, the first information in a first one of first time units in a subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+2, a being the subframe index number and a value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 0, receiving, by the receiving end device, the first information in a second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+3, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to a TDD uplink/downlink configuration 1, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 4 or 9;
the method being applied to the TDD uplink/downlink configuration 1, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being one of 0, 4, 5 or 9;
the method being applied to the TDD uplink/downlink configuration 1, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 1, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 0 or 5;
the method being applied to the TDD uplink/downlink configuration 1, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+6, a being the subframe index number and the value of a being 1 or 6;
the method being applied to a TDD uplink/downlink configuration 2, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being 0 or 5;
the method being applied to the TDD uplink/downlink configuration 2, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+7, a being the subframe index number and the value of a being 0 or 5;
the method being applied to the TDD uplink/downlink configuration 2, receiving, by the receiving end device, the first information in at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+6, a being the subframe index number and the value of a being 1 or 6;
the method being applied to the TDD uplink/downlink configuration 2, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+4, a being the subframe index number and the value of a being 3 or 8;
the method being applied to the TDD uplink/downlink configuration 2, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 4 or 9;
the method being applied to a TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being 0 or 1;
the method being applied to the TDD uplink/downlink configuration 3, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 0 or 1;
the method being applied to a TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+11, a being the subframe index number and the value of a being 1;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+8, a being the subframe index number and the value of a being 4;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 4, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being 0 or 1;
the method being applied to a TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+12, a being the subframe index number and the value of a being 0;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+11, a being the subframe index number and the value of a being 1;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in a subframe a+9, a being the subframe index number and the value of a being 3;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+8, a being the subframe index number and the value of a being 4;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 5, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being 0;
the method being applied to a TDD uplink/downlink configuration 6, receiving, by the receiving end device, the first information in the first one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+2, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 6, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being one of 0, 1 or 5;
the method being applied to the TDD uplink/downlink configuration 6, receiving, by the receiving end device, the first information in the second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+6, a being the subframe index number and the value of a being 6;
or,
the method being applied to the TDD uplink/downlink configuration 6, receiving, by the receiving end device, the first information in the at least one of the first or second one of first time units in the subframe a, and sending, by the receiving end device, the second information to the sending end device in the subframe a+3, a being the subframe index number and the value of a being 9.

### Claim 11 (depends on 1)

The method according to claim 1, wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit comprises:
receiving, by the receiving end device, downlink data sent by the sending end device on a Physical Downlink Shared Channel (PDSCH) in the first time unit,
wherein sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprises:
sending, by the receiving end device, feedback information to the sending end device in the second time unit, the feedback information being configured to indicate whether the receiving end device successfully receives the downlink data.

### Claim 12 (depends on 1)

The method according to claim 1, wherein receiving, by the receiving end device, the first information sent by the sending end device in the first time unit comprises:
receiving, by the receiving end device, downlink control signaling sent by the sending end device in the first time unit, the downlink control signaling being configured to schedule transmission of uplink data of the receiving end device,
wherein sending, by the receiving end device, the second information corresponding to the first information to the sending end device in the second time unit comprises:
sending, by the receiving end device, the uplink data to the sending end device on a Physical uplink Shared Channel (PUSCH) in the second time unit.

### Claim 13

An information transmission method, comprising:
sending, by a sending end device, first information to a receiving end device in a first time unit; and
receiving, by the sending end device, second information corresponding to the first information from the receiving end device in a second time unit, wherein a duration of the first time unit is different from that of the second time unit.

### Claim 14 (depends on 13)

The method according to claim 13, wherein the second time unit is a first one of second time units after a target time length since a starting moment of the first time unit, wherein the target time length is an integral multiple of the duration of the first time unit.

### Claim 15 (depends on 13)

The method according to claim 13, wherein a subframe comprises M first time units, an ending moment of an ith first time unit in the M first time units is before a starting moment of an (i+1)th first time unit, or, the ending moment of the ith first time unit is the starting moment of the (i+1)th first time unit, wherein M is a positive integer and M≥1, i is set to be 0 when M is 1, and i is a positive integer and 1≤i≤M−1 when M>1; and
a subframe comprises N second time units, an ending moment of a kth second time unit in the N second time units is before a starting moment of a (k+1)th second time unit, or, the ending moment of the kth second time unit in the N second time units is the starting moment of the (k+1)th second time unit, wherein N is a positive integer and N≥1, k is set to be 0 when N is 1, and k is a positive integer and 1≤k≤N−1 when N>1.

### Claim 16 (depends on 15)

The method according to claim 15, wherein, when the method is applied to a Frequency Division duplexing (FDD) system, a value of N is 1, and a value of M is 2,
wherein sending, by the sending end device, the first information to the receiving end device in the first time unit and receiving, by the sending end device, the second information corresponding to the first information from the receiving end device in the second time unit comprise at least one of the following:
sending, by the sending end device, the first information in a first one of first time units in a subframe a, and receiving, by the sending end device, the second information in a subframe a+2, a being a subframe index number;
or,
sending, by the sending end device, the first information in a second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+3, a being the subframe index number.

### Claim 17 (depends on 15)

The method according to claim 15, wherein, when the method is applied to the FDD system, a value of N is 1, and M is a positive integer more than or equal to 3,
wherein sending, by the sending end device, the first information to the receiving end device in the first time unit and receiving, by the sending end device, the second information corresponding to the first information from the receiving end device in the second time unit comprise at least one of the following:
sending, by the sending end device, the first information in any one of first M−3 first time units in a subframe a, and receiving, by the sending end device, the second information in a subframe a+1, a being a subframe index number;
or,
sending, by the sending end device, the first information in any one of last three first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+2, a being the subframe index number.

### Claim 18 (depends on 15)

The method according to claim 15, wherein, when the method is applied to the FDD system, a value of M is 1, and N is a positive integer more than or equal to 2,
wherein sending, by the sending end device, the first information to the receiving end device in the first time unit and receiving, by the sending end device, the second information corresponding to the first information from the receiving end device in the second time unit comprise:
sending, by the sending end device, the first information in a subframe a; and
receiving, by the sending end device, the second information in a first one of second time units in a subframe a+4, a being the subframe index number.

### Claim at position 19

-21. (canceled)

### Claim 22 (depends on 15)

The method according to claim 15, wherein, when the method is applied to a Time Division duplexing (TDD) system, a value of N is 1, and a value of M is 2,
wherein sending, by the sending end device, the first information to the receiving end device in the first time unit and receiving, by the sending end device, the second information corresponding to the first information from the receiving end device in the second time unit comprise at least one of the following:
the method being applied to a TDD uplink/downlink configuration 0, sending, by the sending end device, the first information in a first one of first time units in a subframe a, and receiving, by the sending end device, the second information in a subframe a+2, a being the subframe index number and a value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 0, sending, by the sending end device, the first information in a second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+3, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to a TDD uplink/downlink configuration 1, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 4 or 9;
the method being applied to the TDD uplink/downlink configuration 1, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being one of 0, 4, 5 or 9;
the method being applied to the TDD uplink/downlink configuration 1, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 1, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 0 or 5;
the method being applied to the TDD uplink/downlink configuration 1, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information to the sending end device in a subframe a+6, a being the subframe index number and the value of a being 1 or 6;
the method being applied to a TDD uplink/downlink configuration 2, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being 0 or 5;
the method being applied to the TDD uplink/downlink configuration 2, sending, by the sending end device, the first information in at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+6, a being the subframe index number and the value of a being 1 or 6;
the method being applied to the TDD uplink/downlink configuration 2, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+4, a being the subframe index number and the value of a being 3 or 8;
the method being applied to the TDD uplink/downlink configuration 2, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 4 or 9;
the method being applied to a TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being 0 or 1;
the method being applied to the TDD uplink/downlink configuration 3, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 0 or 1;
the method being applied to a TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+11, a being the subframe index number and the value of a being 1;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+8, a being the subframe index number and the value of a being 4;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 4, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being 0 or 1;
the method being applied to a TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+12, a being the subframe index number and the value of a being 0;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+11, a being the subframe index number and the value of a being 1;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in a subframe a+9, a being the subframe index number and the value of a being 3;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+8, a being the subframe index number and the value of a being 4;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+7, a being the subframe index number and the value of a being 5;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+6, a being the subframe index number and the value of a being 6;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+5, a being the subframe index number and the value of a being 7;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+4, a being the subframe index number and the value of a being 8;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 9;
the method being applied to the TDD uplink/downlink configuration 5, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being 0;
the method being applied to a TDD uplink/downlink configuration 6, sending, by the sending end device, the first information in the first one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+2, a being the subframe index number and the value of a being one of 0, 1, 5 or 6;
the method being applied to the TDD uplink/downlink configuration 6, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being one of 0, 1 or 5;
the method being applied to the TDD uplink/downlink configuration 6, sending, by the sending end device, the first information in the second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+6, a being the subframe index number and the value of a being 6;
or,
the method being applied to the TDD uplink/downlink configuration 6, sending, by the sending end device, the first information in the at least one of the first or second one of first time units in the subframe a, and receiving, by the sending end device, the second information in the subframe a+3, a being the subframe index number and the value of a being 9.

### Claim at position 21

-24. (canceled)

### Claim 25

A receiving end device, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, wherein the computer program, when executed by the processor, cause the processor to execute operations comprising:
receiving first information sent by a sending end device in a first time unit; and
sending second information corresponding to the first information to the sending end device in a second time unit, wherein a duration of the first time unit is different from that of the second time unit.

### Claim at position 23

-48. (canceled)